Home / 18,934.20-26,145.72-11,872.80

Finding the Fourth Proportional to 18,934.20, 26,145.72 and 11,872.80

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Solution

The fourth proportional to 18,934.20, 26,145.72 and 11,872.80 is: 16,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.20 : 26,145.72 = 11,872.80 : x
  2. Step 2: Convert to fraction form
    18,934.20/26,145.72 = 11,872.80/x
  3. Step 3: Cross multiply
    18,934.20x = 26,145.72 × 11,872.80
  4. Step 4: Simplify right side
    18,934.20x = 310,422,904.42
  5. Step 5: Solve for x
    x = 310,422,904.42/18,934.20
  6. Step 6: Final answer
    x = 16,394.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.